Apparatus and method for making cellulosic products



Oct. 3,` 1967 R. D. ANDERSON v 3,344,483

APPARATUS AND METHOD FOR MAKING CELLULOSIC PRODUCTS Filed April 27, 196431 Sheets-Sheet l Oct. 3, 1967 R. D. ANDERSON APPARATUS AND METHOD FORMAKING CELLULOSIC PRODUCTS 3l Sheets-Sheet 2' Filed April 27. 1964 Oct.3, 1967 R. D. ANDERSON APPARATUS AND METHOD FOR MAKTNG-cDLLULosIcPRODUCTS Filed April 27, 1964 31 Sheets-Sheet 5 Oct; 3, 1967 R. D.ANDERSON 3,344,483

APPARATUS AND METHOD FOR MAKING CELLULOSIC PRODUCTS 51 Sheets-Sheet 4Filed April 27, 1964 Oct. 3, 1967 R. D. ANDERSON v 3,344,483

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' APPARATUS AND-METHOD FOR MAKING CELLULOSIC PRODUCTS Filed'April 27,1964 51 Sheets-Sheet R. D. ANDERSON APPARATUS AND METHOD FOR MAKINGCELLULOSIC PRODUCTS Oct. 3, 1967 51 Sheets-Sheet 8 Filed April 27. 1964F/GJ/ R. D. ANDERSON 'Oct 3, 1967 3,344,483

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APPARATUS AND METHOD FOR'MAKING CELLULOSIC PRODUCTS Filed April 27, 19645l Sheets-Sheet 16 Oct. 3; 1967 R.. D. ANDERSON APPARATUS AND METHOD FORMAKING CELLULOSIC PRODUCTS .3l Sheets-Sheet l? Filed April 27. 1964 Oct.3, 1967 R. D. ANDERsoN APPARATUS AND METHOD FOR MAKING CELLULOSICPRODUCTS Filed April 27. 1954 51 Sheets-Sheet 18 vw .mi

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APPARATUS AND METHOD FOR MAKING CELLULOSIC PRODUCTS Filed April 2v, 196451 sheets-sheet 19 4S! 447 437 4 Y 4,4? w24 Oct. 3, 1967 R. D. ANDERSON3,344,483

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1. APPARATUS FOR MAKING TAPERED SANITARY PADS OF APPROXIMATE ISOCELESTRAPEZOHEDRON SHAPE APPLYING PAD WRAPPING, FORMING END TABS OF THEWRAPPING CONNECTING THE PADS AND FOLDING THE TABS OVER THE PAD,COMPRISING, IN COMBINATION: MEANS FOR FEEDING WRAPPED WADDINGINTERMITTENTLY TO A CLAMPING MECHANISM FOR THE WADDDING; SLITTINGMECHANISM ADJACENT SAID CLAMPING MECHANISM FOR ALTENATELY CUTTING SAIDWADDING AT THE CLAMPING MECHANISM AS THE WADDING IS SUCCESSIVELY STOPPEDIN IT FEEDING AT EQUAL ACUTE BUT OPPOSITELY DISPOSED ANGLES TO THE LINEOF FEED OF SAID WADDING WHEREBY TO CUT ISOCELES TRAPEZOHEDRON PADSHAVING A WIDE END AND AN OPPOSITE NARROW END AND NONPARALLEL SIDES; ACONTINUOUSLY RUNNING CONVEYOR MEANS IN LINE WITH SAID INTERMITTENT FEEDMEANS AND BEYOND SAID CLAMPING MECHANISM AND SAID SLITTING MECHANISM INTHE LINE OF FLOW OF SAID WADDING TO TRANSFER THE CUT PADS AT EQUALSPACED APART SIDE BY SIDE AND OPPOSITELY MOVEMENT OF SAID CONTINUOUSLYRUNNING CONVEYOR MEANS; ARRESTING MEANS AT THE END OF SAID CONTINUOUSLYRUNNING CONVEYOR MEANS FOR ARRESTING SAID PADS WITH THEIR AXES DISPOSEDNORMAL TO THE LINE OF THEIR FEED; FIRST TRANSVERSE CONVVEYOR MEANSADJACENT THE ARRESTING MEANS AND SAID CONTINUOUSLY RUNNING CONVEYORMEANS FOR TRANSFERRING THE PADS IN EQUAL SPACED RELATION WIDE END TOWIDE END AND SHORT END TO SHORT; SPACING MECHANISM FOR RECEIVING THEPADS IN LINE FROM SAID FIRST TRANSVERSE CONVEYOR MEANS AND SPACING THEMWITH THEIR WIDE ENDS RELATIVELY CLOSE TOGETHER AND THEIR NARROW ENDSRELATIVELY FAR APART; WRAPPING WEB FEEDING MECHANISM FEEDING WRAP TO APAD RECEIVING AND WRAP FOLDING MECHANISM NEXT ADJACENT IN LINE OF FLOWTO SAID SPACING MECHANISM WHEREBY PADS ARE RECEIVED IN SAID SPACEDRELATION ON SAID WRAP AND THE WRAP IS FOLDED OVER INTO A TUBE OF UNIFORMCROSS SECTION AS LARGE AS THE LARGER END OF SAID PAD WHEREBY LOOSE WRAPEXTENDS ADJACENT THE TAPERED SIDES OF THE PAD FROM ADACENT WIDER END TOTHE NARROW END; A FORM ROLL UNDE WHICH SAID PADS AND WRAP ARE LEAD FROMSAID WRAP FOLDING MECHANISM SAID FORM ROLL HAVING A RIM WHOSE PERIPHERYMATCHES THE VARYING WIDTH OF SAID SPACED PADS AND JOINING WRAP PORTIONPASSING THEREBENEATHE, SAID ROLL HAVING SIDES AT THE RIM GENERALLYNORMAL TO A LINE GENERATING THE PERIPHERAL SURFACE OF THE ROLL; ROTATINGFRICTION ROLLS ON EACH SIDE OF SAID FORM ROLL WITH THE PERIPHERALFRICTION SURFACE HAVING COOPERATING CONTACT WITH SAID SIDES OF THE FORMROLL AT THE LOCUS OF PASSAGE OF THE PADS AND WRAP, THE LOOSE WRAP BEINGBETWEEN THE SIDES OF THE FORM ROLL AND FRICTION ROLLS ON EACH SIDE, SAIDFRICTION ROLLS LYING IN PLANES INCLINED UPWARDLY IN THE DIRECTION OFFLOW OF THE PADS THEREUNDER AND GENERALLY NORMAL TO THE PLANE OF THEFORM ROLL WHEREBY A PLANE CONTAINING THE AXIS OF THE FORM ROLL AND THETANGENTAL LOCUS OF CONTACT OF THE PADS AND WRAP INTERSECTS THE PLANESCONTAINING THE AXES OF THE FORM ROLLS IN SAID LOCUS OF CONTACT; MEANSFOR ROTATING SAID FRICTION ROLLS WITH PERIPHERAL SPEED EQUAL TO ORGREATER THAN THE WRAP AND PAD SPEED IN THE DIRECTION OF FLOW WHEREBY THELOOSE WRAP IS DRAWN UP ALONG EACH SIDE OF THE FORM ROLL; CONVEYOR MEANSHAVING FLIGHTS FOR PADS AND CONNECTING WRAP CONVEYING THE SAME FROM THEFORM ROLL; FOLDING MEANS FOLLOWING THE FORM ROLL AND COOPERATING WITHSAID JUSTMENTIONED CONVEYOR MEANS FOR FOLDING THE WRAP FORMED ON EACHSIDE OF THE FORM ROLL ONTO THE NARROWER END PORTION OF THE PAD AND ASOVERLAP ON THE WRAP CONNECTING THE NARROW ENDS OF THE PADS; CALENDERMEANS BETWEEN WHICH SAID PADS AND PAD CONNECTING WRAP IS LED FORCALENDERING THE SAME; CONVEYING MEANS CONVEYING THE WRAPPED ANDCALENDERED PADS AND CONNECTING WRAP TO A CUTTER MEANS HAVING A CUTTERFOR SEVERING THE CONNECTING WRAP TO FORM A REAR TAB FOR THE LEADING PADAND A FRONT TAB FOR THE TRAILING PAD AS RESPECT THE JUST-MENTIONEDPOSITIONS TO SAID CUTTER; SAID CUTTER MEANS HAVING ROTARY MOUNTING MEANSAND COOPERATING WITH A BED KNIFE OVER WHICH THE CONNECTING WRAP IS LEDAND SEVERED BY SAID CUTTER, SAID ROTARY CUTTER MEANS HAVING SUCTIONMEANS TRAILING THE CUTTER THEREON FOR HOLDING THE LEADING TAB TO THEROTARY CUTTER MEANS AS THE PAD IS CONVEYED ON IN THE LINE OF FLOW ONSAID LAST-MENTIONED CONVEYING MEANS; SAID CONVEYING MEANS CONVEYING THEPADS AND THEIR CONNECTING WRAP TO THE CUTTER MEANS HAVING A PORTIONEXTENDING EACH SIDE OF AND BELOW THE BED KNIFE IN THE LINE OF FLOW; ANDENDLESS CONVEYOR MEANS FOLLOWING SAID CUTTER MEANS IN THE DIRECTION OFFLOW AND HAVING A BOTTOM RUN OVERLYING SAID CONVEYING MEANS PORTIONFOLLOWING THE BED KNIFE, SAID BOTTOM OVERLYING RUN JUSTMENTIONEDSTRIPPING SAID LEADING TAB FROM THE SUCTION MEANS AND FOLDING IT BACKOVER THE LEADING END AND TOP OF THE PAD PASSING THEREUNDER; A FURTHERENDLESS CONVEYOR RECEIVING SAID PADS ON A RUN THEREOF; AND A REAR TABFOLDING MEANS FOR FOLDING THE REAR TABS OVER THE REAR END AND TOP OF THEPADS AS THEY MOVE IN THE LINE OF FLOW ON SAID JUST-MENTIONED RUN TOCOMPLETE THE FORMATION OF SAID SANITARY PADS.